Preparation of ZnAl layered double hydroxides supported by silica for the treatment of Cr(VI) and Cu(II) in aqueous solution
Scientific Reports,
Год журнала:
2025,
Номер
15(1)
Опубликована: Янв. 20, 2025
A
novel
adsorbent
ZnAl–LDHs/SiO2
(ZA/SiO2)
was
prepared
by
blending
urea
mixture
of
ZnSO4
and
Al2(SO4)3
while
using
SiO2
as
a
support
form.
The
adsorption
properties
ZA/SiO2
for
the
removal
toxic
metal
ions
(Cu(II)
Cr(VI))
from
water
were
evaluated.
By
batch
experiment
method
to
investigate
Cu(II)
Cr(VI)
solution
treatment
effect.
sorption
kinetics
curves
on
L-shaped.
What's
more,
solid
concentration
effect
found
in
process
kinetics.
Langmuir
Freundlich
isotherm
models
used
analyze
data.
results
showed
that
conforms
models.
However,
capacity
compounds
is
greatly
improved.
158
mg·g−1
176
mg·g−1,
which
3.6
1.8
times
ZnAl-LDHs
(ZA),
respectively.
Density
functional
theory
(DFT)
utilized
analysis
intrinsic
mechanism
specific
pathways.
primary
removing
mainly
included
intercalation
Cr2O72−
exchange
between
OH−,
excluding
Cr(OH)3
precipitation.
Regarding
eliminating
water,
it
involves
isomorphic
substitution
predominant
process,
except
formation
Cu(OH)2
precipitates.
Язык: Английский
Purification of arsenic-contaminated drinking water by Fe-Al-CO3 layered double hydroxide derived from secondary aluminum dross: adsorption and stabilization studies
Scientific Reports,
Год журнала:
2025,
Номер
15(1)
Опубликована: Янв. 13, 2025
This
study
aims
to
utilize
secondary
aluminum
dross
waste
synthesize
Fe-Al
layered
double
hydroxide
(Fe-Al
LDH)
for
efficient
adsorption
of
arsenic
from
drinking
water.
The
synthesis
process
was
based
on
a
multi-step
hydrometallurgical
approach,
in
which
the
content
first
converted
sodium
aluminate.
followed
by
transformation
into
LDH
through
series
processes,
including
gelation,
sol
formation,
simultaneous
precipitation,
and
aging.
A
suitable
crystal
structure
adsorbent
successfully
synthesized
at
Fe:
Al
molar
ratio
3,
pH
7,
an
aging
time
12
h.
characterization
tests
revealed
that
Fe-Al-LDH
had
interlayer
space
7.5
Å,
specific
surface
area
145
m2/g,
pore
volume
0.57
cm3/g.
resulting
then
used
adsorb
aqueous
solutions.
results
showed
amount
adsorbed
0.144
mg/g
room
temperature,
dose
0.5
g/L,
=
7
initial
concentration
80
µg/L.
reduced
water
below
standard
value
after
period
40
min.
In
addition,
can
stabilize
species
its
thus
prevent
their
re-release
environment.
Язык: Английский
In situ engineering 2D/3D CuCo2S4@Co3O4 heterojunction for sensing and photocatalytic degradation of diclofenac sodium in environmental water
Journal of Environmental Sciences,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 1, 2025
Язык: Английский
Utilization of Natural Mineral Materials in Environmental Remediation: Processes and Applications
Minerals,
Год журнала:
2025,
Номер
15(3), С. 318 - 318
Опубликована: Март 19, 2025
The
discharge
of
wastewater
containing
persistent
organic
pollutants
presents
significant
ecological
and
health
challenges
due
to
their
toxicity
resilience.
Recent
advances
in
advanced
oxidation
processes
(AOPs)
other
remediation
mechanisms,
notably
utilizing
natural
mineral
materials
(NMMs),
offer
promising
solutions
these
challenges.
NMMs,
with
cost-effectiveness,
accessibility,
eco-friendly
nature,
non-toxicity,
unique
structural
properties,
have
shown
promise
environmental
could
effectively
replace
conventional
catalysts
related
applications.
These
minerals
enable
the
activation
oxidants,
generating
reactive
oxygen
species
crucial
for
degradation
pollutants.
This
article
reviews
mechanisms
NMMs
various
AOPs,
including
photocatalysis,
Fenton-like
reactions,
persulfate-activation-based
processes,
discusses
potential
enhancing
pollutant
efficiency,
a
focus
on
persulfates
photo-induced
redox
processes.
synergy
between
photocatalytic
properties
catalytic
provided
by
offers
robust
approach
managing
water
pollution
without
drawbacks
secondary
waste
production,
thus
supporting
sustainable
efforts.
Язык: Английский
Tribocatalysis and self-Fenton reaction of schorl/pyrite mineral composites under stirring conditions
Materials Science in Semiconductor Processing,
Год журнала:
2025,
Номер
193, С. 109496 - 109496
Опубликована: Март 24, 2025
Язык: Английский
Enhanced sonophotocatalytic degradation of phthalate acid ester using copper-chromium layered double hydroxides on carbon nanotubes and biochar
Ultrasonics Sonochemistry,
Год журнала:
2025,
Номер
unknown, С. 107351 - 107351
Опубликована: Апрель 1, 2025
Язык: Английский
Efficient catalytic decomposition of ozone by flake NiFe-LDH with multiple acidic sites
Applied Surface Science,
Год журнала:
2025,
Номер
700, С. 163191 - 163191
Опубликована: Апрель 15, 2025
Язык: Английский
One-Pot Preparation of Layered Double Hydroxide-Engineered Boric Acid Root and Application in Wastewater
Molecules,
Год журнала:
2024,
Номер
29(13), С. 3204 - 3204
Опубликована: Июль 5, 2024
Heavy
metals
and
organic
pollutants
are
prevalent
in
water
bodies,
causing
great
damage
to
the
environment
human
beings.
Hence,
it
is
urgent
develop
a
kind
of
adsorbent
with
good
performance.
Anion
interlacing
layered
double
hydroxides
(LDHs)
promising
for
sustainable
removal
heavy
metal
ions
dyes
from
wastewater.
Using
aluminum
chloride,
zinc
chloride
ammonium
pentaborate
tetrahydrate
(NH4B5O8
·
4H2O,
BA)
as
raw
materials,
LDHs
complex
(BA-LDHs)
B5O8−
intercalation
was
prepared
by
one-step
hydrothermal
method.
The
BA-LDHs
samples
were
characterized
X-ray
powder
diffractometer
(XRD),
scanning
electron
microscope
(SEM),
Fourier
transform
infrared
spectrometer
(FT-IR)
Brunauer–Emmett–Teller
(BET)
results
showed
that
B5O8-
successfully
intercalated.
Adsorption
experimental
suggested
possess
maximum
adsorption
capacity
18.7,
57.5,
70.2,
3.12
mg·g−1
Cd(II),
Cu(II),
Cr(VI)
Methylene
blue
(MB)
at
Cs
=
2
g·L−1,
respectively.
experiment
conforms
Langmuir
Freundlich
models,
kinetic
data
well
fitted
pseudo-second-order
equation.
as-prepared
have
potential
application
prospects
More
importantly,
they
also
provide
strategy
preparing
selective
adsorbents.
Язык: Английский